emaxfun | R Documentation |
Evaluate Emax models for a vector of dose levels for multiple sets of parameters.
emaxfun(dose, parm)
dose |
A vector (or scalar) of dose levels |
parm |
A vector or matrix with columns containing
|
The Hill parameter is omitted from parm
for the hyperbolic model
Returns a matrix of Emax function evaluations. The rows correspond to the parameter replications, and the columns correspond to the dose levels.
The ordering of the parameters was selected to faciliate use of the 'plinear' algorithm in function nls.
Neal Thomas
dlogis
doselev<-c(0,5,25,50,100)
e0<-2.465375
ed50<-67.481113
dtarget<-100
diftarget<-9.032497
lambda=2
emax<-solveEmax(diftarget,dtarget,log(ed50),lambda,e0)
parm<-c(log(ed50),lambda,emax,e0)
plot(doselev,emaxfun(doselev,parm))
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